Shur Flow Pump

dwarren

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exMember
Joined
Jul 8, 2004
RO Number
14233
Messages
461
I have what I thought to be a FW water leak in my carver. I've checked every line to all areas and found nothing. I believe the bellows on my pump have gone bad. I'm thinking I should replace pump. What, if anything, can I do to verify that?
 
Probably no ideas you haven't already tried...

Assuming there is water TO the pump, and it is running but not pumping or not holding pressure, you're probably right.

The valves in the pump are made of rubber and over time will warp and not seal.

The pumps are modular and easy to repair, and a valve assembly is a lot less expensive and easier to replace than the whole pump. Check the Shurflo website for the part #, and order it from your retailer. Maybe order two.

http://www.shurflo.com/marine-products/marine-pumps/fresh-water-pumps/default.html
 
If you have leak at the pump you woudl see it. I don't understand why you'd change the pump without seeing the leak first,

Shurflo pumps don't have bellows like a Vacuflush pump (unless you have th type of pump with external motor and belt) but they do have a diaphragm inside which has a limited life. Some may have a week hole to allow water to leak out when that fails but many do not and water is contained in th pump, ruining the motor.

It's a easy to eliminate the pump, just turn it off the next time you leave the boat and see if you find water when you return,

Hard to know with so few details but I doubt your pump is the source of the leak. More likely to be a pluming leak or rain leak ASSuming it is not coming from the outside of the hull
 
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